`BR-CL-24`

EN 16931 · validation rule

EN 16931Error

The MIME code of an attached document (BT-125-1) is not in the allowed list. EN 16931 allows application/pdf, image/png, image/jpeg, text/csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet and application/vnd.oasis.opendocument.spreadsheet; set mimeCode on cbc:EmbeddedDocumentBinaryObject / ram:AttachmentBinaryObject accordingly.

Field: attachments[].mime_type (BT-125-1)
Rule set: EN 16931
Rule-set version: EN 16931 validation artefacts 1.3.17 · in force since 2026-10-13 · Rule-set changelog
Who has to fix it: The sender

This is a property of the file you received, so it cannot be corrected on your side without changing the document — ask the supplier to reissue it.

Check your own invoice

Drop the file that failed. We parse it, run the official rule sets against it and list every finding with a fix — 20 invoices per day, no key, nothing stored.

Open the live demo

Same explanation over the API: GET /v1/rules/BR-CL-24?lang=en